Profile: Shanghai Main Precision Tools Co., Ltd. offers PCBN inserts & blades, and CBN inserts & blades. Our MBN cubic boron nitride blades are advanced industrial cutting blades, which are produced with nano CBN micro powder and high temperature-high pressure-micro crystallization process. These blades have excellent anti-fracture, good wear resistance and chemical stability. The MBN series cutting tools which are widely applied in the processing of black metal work pieces such as roller, automobile brakes, brake hub, pumps, motor (motor shell), valves, food machinery, mine machinery, bearings and automobile, have been the best substitutes of ceramic, coating, alloy and blades.